Article Directory
1. Get the list of PVCs
Get the pvc list under the specified namespace
import (
"context"
coreV1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
)
func GetPVCList(clientSet *kubernetes.Clientset, namespaceName string) (pvcList *coreV1.PersistentVolumeClaimList, err error) {
pvcList, err = clientSet.CoreV1().PersistentVolumeClaims(namespaceName).List(context.TODO(), metaV1.ListOptions{
})
if err != nil {
return nil, err
}
return pvcList, err
}
2. Get the specified PVC
import (
"context"
coreV1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
)
func GetPVC(clientSet *kubernetes.Clientset, namespaceName string, PVCName string) (pvcInfo *coreV1.PersistentVolumeClaim, err error) {
pvcInfo, err = clientSet.CoreV1().PersistentVolumeClaims(namespaceName).Get(context.TODO(), PVCName, metaV1.GetOptions{
})
if err != nil {
return nil, err
}
return pvcInfo, err
}
3. Create PVCs
import (
"context"
coreV1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
)
type CreatePVCRequest struct {
NamespaceName string `json:"namespace_name"`
PvcName string `json:"pvc_name"`
AccessModes []coreV1.PersistentVolumeAccessMode `json:"access_modes"`
StorageSize int64 `json:"storage_size"`
StorageClassName string `json:"storage_class_name"`
}
func CreatePVC(clientSet *kubernetes.Clientset, request CreatePVCRequest) (pvcInfo *coreV1.PersistentVolumeClaim, err error) {
pvcSrc := new(coreV1.PersistentVolumeClaim)
pvcSrc.ObjectMeta.Name = request.PvcName
pvcSrc.Spec.AccessModes = request.AccessModes
//设置存储大小
var resourceQuantity resource.Quantity
resourceQuantity.Set(request.StorageSize * 1000 * 1000 * 1000)
pvcSrc.Spec.Resources.Requests = coreV1.ResourceList{
"storage": resourceQuantity,
}
//使用存储卷名字
if len(request.StorageClassName) != 0 {
pvcSrc.Spec.StorageClassName = &request.StorageClassName
}
//创建pvc
pvcInfo, err = clientSet.CoreV1().PersistentVolumeClaims(request.NamespaceName).Create(context.TODO(), pvcSrc, metaV1.CreateOptions{
})
if err != nil {
return nil, err
}
return pvcInfo, err
}
4. Delete the specified PVC
import (
"context"
coreV1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
)
type DeletePVCRequest struct {
NamespaceName string `json:"namespace_name"`
PvcName string `json:"pvc_name"`
}
func DeletePvc(clientSet *kubernetes.Clientset, request DeletePVCRequest) (err error) {
err = clientSet.CoreV1().PersistentVolumeClaims(request.NamespaceName).Delete(context.TODO(), request.PvcName, metaV1.DeleteOptions{
})
if err != nil {
return err
}
return nil
}
5. Deployment uses pvc
Another article explains: "Go language development k8s(client-go)-03-Deployment mounts configmap, pvc, host path"
